If you have noticed that your Gas Grill is becoming hard to light or that the flame isn’t as strong as it usually is, then take the time to check and clean the venturis.
In some areas of the country spiders have been known to cause “flashback” problems. The spiders spin webs, build nests and lay eggs in the venturi tubes(s) disrupting the flow of gas to the burner. the backed up gas can ignite in the venturi behind the control panel. This is known as flashback, and it can damage your grill and even cause injury.
To prevent flashbacks and ensure good performance, the burner and venturi assembly should be removed from the grill and cleaned before use whenever the grill has been idle for an extended period.